From 718c21ecd7a9ac35fbdf28d2dcd2310634c669ef Mon Sep 17 00:00:00 2001 From: Stephan Mueller Date: Sun, 15 May 2022 17:56:56 +0200 Subject: [PATCH 18/25] LRNG - add option to enable runtime entropy rate configuration The entropy rate for the different entropy sources is configured at compile time. Enabling the option CONFIG_LRNG_RUNTIME_ES_CONFIG allows the entropy sources' entropy rate to be adjusted at runtime or boot time. The different options are: - IRQ ES: lrng_es_irq.irq_entropy - Scheduler ES: lrng_es_sched.sched_entropy - CPU ES: lrng_es_cpu.cpu_entropy - Kernel ES: lrng_es_krng.krng_entropy - Jitter RNG ES: lrng_es_jent.jent_entropy The values to be specified there must apply the rationale given for the different CONFIG_LRNG_*_ENTROPY_RATE kernel configuration options. Signed-off-by: Stephan Mueller --- drivers/char/lrng/Kconfig | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) --- a/drivers/char/lrng/Kconfig +++ b/drivers/char/lrng/Kconfig @@ -124,17 +124,17 @@ endmenu # "Specific DRNG seeding strateg menu "Entropy Source Configuration" -# config LRNG_RUNTIME_ES_CONFIG -# bool "Enable runtime configuration of entropy sources" -# help -# When enabling this option, the LRNG provides the mechanism -# allowing to alter the entropy rate of each entropy source -# during boot time and runtime. -# -# Each entropy source allows its entropy rate changed with -# a kernel command line option. When not providing any -# option, the default specified during kernel compilation -# is applied. +config LRNG_RUNTIME_ES_CONFIG + bool "Enable runtime configuration of entropy sources" + help + When enabling this option, the LRNG provides the mechanism + allowing to alter the entropy rate of each entropy source + during boot time and runtime. + + Each entropy source allows its entropy rate changed with + a kernel command line option. When not providing any + option, the default specified during kernel compilation + is applied. comment "Common Timer-based Entropy Source Configuration"